Skin plaster



FIG. 1 is a front view of the skin plaster;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a bottom plan view of the skin plaster, and the top plan view is a mirror image thereof; and,

FIG. 6 is a perspective view thereof.

The broken line showing of parts of the drawings is included for the purpose of illustrating use and environment and forms no part of the claimed design. 

The ornamental design for a skin plaster, as shown and described. 